<template>
  <div class="login-container">
    <el-form ref="formRef" :model="form" class="login-form" :rules="rules">
      <div class="title-container">
        <h3 class="title">欢迎来到同伴学习互评系统</h3>
        <h3 class="info">请填写登录信息</h3>
      </div>
      <el-form-item prop="userid">
        <el-icon :size="20" class="svg-container">
          <User />
        </el-icon>
        <el-input v-model="form.userid" placeholder="userid"></el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-icon :size="20" class="svg-container">
          <template v-if="passwordVisible">
            <Unlock @click="togglePasswordVisibility" class="show-pwd-icon" />
          </template>
          <template v-else>
            <Lock @click="togglePasswordVisibility" class="show-pwd-icon" />
          </template>
        </el-icon>
        <el-input
          v-model="form.password"
          :type="passwordVisible ? 'text' : 'password'"
          placeholder="password"
        ></el-input>
      </el-form-item>
      <el-button type="primary" class="login-button" @click="handleLogin">登录</el-button>
      <el-button class="login-button register-button" @click="handleRegister">注册</el-button>
    </el-form>
  </div>
</template>

<script setup>
import { ref } from 'vue'
import { useStore } from 'vuex'
import { User, Unlock, Lock } from '@element-plus/icons-vue'
import { login } from '@/api/login'
import { useRouter } from 'vue-router'
import { ElMessage } from 'element-plus'

const router = useRouter()
const store = useStore()

const form = ref({
  userid: '',
  password: ''
})

const rules = ref({
  userid: [
    {
      required: true,
      message: 'Please input Activity id',
      trigger: 'blur'
    }
  ],
  password: [
    {
      required: true,
      message: 'Please input Activity password',
      trigger: 'blur'
    }
  ]
})

const formRef = ref(null)

const passwordVisible = ref(false)

const handleLogin = async () => {
  formRef.value.validate(async (valid) => {
    if (valid) {
      console.log('submit!')
      const loginResult = await login(form.value)

      if (!loginResult.success) {
        if (loginResult.data.code === 0) {
          ElMessage.success('登录成功，欢迎你')
          const token = loginResult.data.data.token
          const kind = loginResult.data.data.kind
          store.commit('setToken', token)
          store.commit('setKind', kind)
          localStorage.setItem('kind', kind)
          if (loginResult.data.data.kind === '1') {
            router.push('/studentCourseManage')
          } else {
            router.push('/teacherCourseManage')
          }
        } else {
          ElMessage.error(loginResult.data.msg)
        }
      } else {
        console.log('Login failed:', loginResult.error)
        return false
      }
    } else {
      console.log('error submit!')
      return false
    }
  })
}

const handleRegister = () => {
  router.push('/register')
}

const togglePasswordVisibility = () => {
  passwordVisible.value = !passwordVisible.value
}
</script>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;
$cursor: #fff;

.login-container {
  min-height: 100%;
  width: 100%;
  background-image: url("/src/assets/bg.jpg");
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;

    :deep(.el-form-item) {
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(0, 0, 0, 0.1);
      border-radius: 5px;
      color: #454545;
    }

    :deep(.el-input) {
      display: inline-block;
      height: 47px;
      width: 85%;

      input {
        background: transparent;
        border: 0px;
        -webkit-appearance: none;
        appearance: none;
        border-radius: 0px;
        padding: 12px 5px 12px 15px;
        color: $light_gray;
        height: 47px;
        caret-color: $cursor;
      }
    }
    .login-button {
      width: 48%;
      box-sizing: border-box;
    }

    .register-button {
      margin-top: 0%;
    }
  }

  .tips {
    font-size: 16px;
    line-height: 28px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
    .info {
      font-size: 20px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
    :deep(.lang-select) {
      position: absolute;
      top: 4px;
      right: 0;
      background-color: white;
      font-size: 22px;
      padding: 4px;
      border-radius: 4px;
      cursor: pointer;
    }
  }

  .show-pwd {
    // position: absolute;
    // right: 10px;
    // top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
